Wrench.



GRIFFEN H. DEEVES, OF CHICAGO, ILLINOIS.

WRENCH- Specification of Letters Patent.

Patented May 21, 1907.

Application filed March 11, 1907. Serial No. 361,789.

T at whom it may concern:

Be it known that I, GRIFFEN H. DEEVES, a citizen of the United States, residingat 375 Thirty-sixth Place, Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Wrenches, of which the following is a specification.

My invention relates to improvements in wrenches of the type employing a doublethreaded shaft operated by a non-rotary nut, as the medium through which the movable wrench-jaw is moved on the wrench-shank toward and away from the fixed jaw.

One of the objects of my invention is to provide a simple and durable construction of wrench of this type which shall be positive in its operation and economical to manufacture.

A further object is to provide a construction in which the bearing member for the distal end of the shaft is sufficiently strong and durable to withstand the great strains to which such part of a wrench of this type is subjected.

To these ends I have devised the construction shown in the accompanying drawing, in which Figure 1 is a face view of my improved wrench; Fig. 2, a central longitudinal section taken through the wrench and showing the fixed jaw and its shank and the threaded shaft, in elevation; Fig. 3, an enlarged section taken at the line 3 on Fig. 1 and viewed in the direction of the arrow; and Fig. 4, an enlarged section taken at the line 4 on Fig. 1 and viewed in the direction of the arrow.

The shank 5 of the wrench, which is preferably of rectangular shape in cross-section, is provided at one end with an integral jaw 6, and near its opposite end in its opposed faces contains slots or recesses 7. Cooperating with the fixed jaw'6 is a movable jaw 8 provided with strap extensions 9 at which itis slid ably confined on the shank, the jaw 8 containing a threaded socket 10 extending parallel with the shank. A shaft 11, provided on one end-portion with a spiralthread l2 and on its opposite end-portion with a screw thread 13 of lesser pitch than the thread 12 and extending in an opposite direction, screws at its threads 13 into the socket 10, and is rotatably confined at its opposite end,

which is provided with a circumferential groove 14, in a socket 15 provided in a socket member or bearing 16, apin or screw 17 passing through the socket member and extending tangentially into the groove 17, serving to prevent withdrawal of the shaft from the bearing 16 and at the same time permitof its rotation therein. 7

Mounted to surround the shaft 11 is a nut 18 which is provided with an internal screw thread 19 which engages the thread 12, on

the shaft, this nut bearing at one face against the adjacent side of the shank and guidingly confined thereon by flange extensions 20 which embrace the shank sides and serve to insure positive operation of the nut when moved along the shaft, as hereinafter described. The socket-member 16 comprises a socket-head 21, containing the socket 15 and arms 22 extending from the head, which fit in the recesses 7 to straddle the shank at its reduced portion, the member 16 being rigidly secured to the shank as by screws 23 passing through the arms 22 and shank.

As illustrated at x, the head 21 of the member 16 extends rearwardly beyond the arms 22 and forms a stop, whereby when the member 16 is screwed to the shank, as described, the under surface of the head 21 rests against the inner face of the shank, and

thus when strain is exerted against the bearing it is resisted through the engagement of the extension 00 with the adjacent side of the shank, and the engagement of the arms 22 with the walls of the recesses 7.

The wrench is operated by moving the nut along the shaft, the nut, owing to its threaded connection with the shaft, rotating the latter with the result of turning the screw-threaded end of the shaft in the movable jaw and thus moving this jaw toward or away from the fixed jaw, depending on the direction in which the nut is moved.

By providing the head-portion 'of the socket-member with the extension 00 and arms 22 set into the recesses in the shank, very great resistance to pressure exerted by the shaft against the socket-member is afforded, with the consequence that the wrench is rendered very durable.

It is apparent that'by reason of the simplicity and small number of wrench-parts, the assembling and disassembling of the device may be quickly and readily effected.

What I claim as new and desire to secure by Letters Patent is 1. A wrench comprising, in combination, a

shank provided on one end with a fixed jaw and near its opposite end 111 opposed faces with recesses, a second aw movably confined IIO on said shank, a bearing on said shank comprising a head provided with'a socket and a rearward extension forming a stop bearing against the adjacent portion of the shank;-

said socket and constructed and "arranged to rotate said shaft by manual movement of the nut longitudinally thereof.

2'. A wrenchcomprising, in combination; a end with a fixed 1aw shank provided on one and near its-opposite end in opbposed-faces with recesses, a second ja'w mova 'ly' confined on said shank, a bearing on said shank comprising a head provided with 'asocket anda rearward extension having a stop bearing against the adjacent portion of the shank,

arms extending from said head and secured in said recesses to straddle the shank at its reduced portion, a double-threaded shaft extending along said shank and provided near one end in its circumference with a groove, said shaft being constructed and arranged to engage said movable jaw and move it toward andaway from the fixed jaw, a

non-rotary nut on-said shaft constructed and arranged to rotate said shaft by manual movement of thenutlongitud-inally thereof, and a pin extending through said head and into said groove, for the'purpose set forth. GRIFFEN H. DEEVES. In the resence of:

WPB. DAVIES, R. A. SOHAEFER. 

